Free JK0-023 Exam Braindumps
CompTIA Network+ certification Questions 451–455 (page: 92)

Updated On: 10-Feb-2026

Kim, a network technician, wants to use a packet analyzer to troubleshoot a reported problem with a user's workstation with IP address 192.168.1.45. To identify the workstation's packets Kim wants to use the workstation's MAC address. Which of the following protocols would provide the needed information?

  1. DHCP
  2. ARP
  3. DNS
  4. PING

Answer(s): B



Kim, an administrator, wants to list all the network connections to and from the server. Which of the following commands would MOST likely be used?

  1. traceroute
  2. ping
  3. ipconfig
  4. netstat

Answer(s): D



A VPN concentrator is used for which of the following purposes?

  1. MAC filtering
  2. Content filtering
  3. Secure network access
  4. Connectivity troubleshooting

Answer(s): C



Which of the following would a network administrator recommend to satisfy fault tolerance needs within the datacenter?

  1. Multimode fiber
  2. Setting up a new hot site
  3. Central KVM system
  4. Central UPS system

Answer(s): D



A network administrator is reviewing logs and notices that a device with a public IP address is trying to access the web server RDP port. Which of the following tools can be used to resolve the domain of the public IP address?

  1. arp
  2. nslookup
  3. ipconfig
  4. netstat

Answer(s): B



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